EP 1348897 A1 20031001 - Shaft seal device
Title (en)
Shaft seal device
Title (de)
Wellendichtung
Title (fr)
Dispositif à garniture d'étanchéité pour un arbre
Publication
Application
Priority
JP 2002084155 A 20020325
Abstract (en)
A shaft seal device (1) has means to decrease the pressure of a sealant at a communication passage between a fluid chamber (63) and a first seal portion (14), to further reduce the pressure by a floating ring (2), to make the first seal portion pressure-proof for sealing a high pressure process fluid, and to reduce the cost of the shaft seal device by simplifying its structure. The device comprises a fluid chamber (63) located between the first seal portion (14) and a second seal portion (15), an intake passage (20) being communicated to a communication passage between the fluid chamber and the first seal portion for allowing a sealant S to flow in, the floating ring (2) being disposed within the fluid chamber and defining a pressure reduction gap between its own inner surface and a rotary shaft (60), and an outlet passage (67) communicating with the pressure reduction gap (7) for circulating the pressure reduced sealant. <IMAGE>
IPC 1-7
IPC 8 full level
F16J 15/40 (2006.01); B01F 15/00 (2006.01); F16J 15/34 (2006.01)
CPC (source: EP US)
F16J 15/3404 (2013.01 - EP US)
Citation (search report)
- [A] US 5609342 A 19970311 - PETERSON ROBERT A [CA], et al
- [A] FR 2582373 A1 19861128 - GUEYTRON JEAN CLAUDE [FR]
- [A] DE 29804075 U1 19980514 - DEPAC DICHTUNGSTECHNIK GMBH [AT]
- [A] EP 0488683 A1 19920603 - CHESTERTON A W CO [US]
- [A] GB 1227362 A 19710407
- [A] US 6325382 B1 20011204 - IWAMOTO YASUTAKA [JP], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 2000, no. 22 9 March 2001 (2001-03-09)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1348897 A1 20031001; EP 1348897 B1 20040922; DE 60300051 D1 20041028; DE 60300051 T2 20051117; JP 2003278921 A 20031002; JP 4111733 B2 20080702; US 2003178782 A1 20030925; US 7210687 B2 20070501
DOCDB simple family (application)
EP 03251877 A 20030325; DE 60300051 T 20030325; JP 2002084155 A 20020325; US 39391803 A 20030324